Steinstücken, a small settlement with approximately 200 inhabitants, is the southernmost territory of the Berlin borough of Steglitz-Zehlendorf, belonging to Wannsee. From the division of Germany in 1949 until a connecting corridor was created in 1971–72, Steinstücken was the only permanently inhabited of twelve original exclaves of West Berlin in East Germany, while West Berlin itself was an enclave controlled by the Western Allies, surrounded either by East Berlin or East German (GDR) territory.
Steinstücken is located on farmland that once belonged to the village of Wendisch Stahnsdorf, which had probably already been abandoned by the time it was mentioned in the list of villages, towns, and cities commissioned in 1375 by Emperor Charles IV. In 1787 the village Stolpe purchased 151 acres of this land, which included part of the Potsdam Forest. A small settlement was established here in 1817 and was called Steinstücken after a piece of village land where rocks from the ice age had once been found.